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Magnetohydrodynamics : Waves and Shock Waves in Curved Space-Time - A. Lichnerowicz

Magnetohydrodynamics

Waves and Shock Waves in Curved Space-Time

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Published: 30th April 1994
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For seventy years, we have known that Einstein's theory is essentially a theory of propagation of waves for the gravitational field. Confusion enters, however, through the fact that the word wave, in physics, implies sometimes repetition and sometimes not. This confusion is often increased by he use of Fourier transforms, by which a disturbanse which appears to be without repetition is resolved into periodic wave-trains with all frequencies. But, in a general curved space-time, we have nothing corresponding to Fourier transforms. Here, we consider systematically waves corresponding to the propagation of discontinuities of physical quantities describing either fields (essentially electromagnetic fields and gravitational field), or the motion of a fluid, or together, in magnetohydrodynamics, the changes in time of a field and of a fluid. The main equations, for the different studied phenomena, constitute a hyperbolic system and the study of a formal Cauchy problem is possible. We call ordinary waves the case in which the derivative of superior order appearing in the system are discontinuous at the traverse of a hypersurface, the wave front ; we call shock waves the case where the derivatives of an order inferior by one are discontinuous at the traverse of a wave front. XI xii PREFACE From 1950, many well-known scientits (Taub, Synge, Choquet-B ruhat, etc.) have studied the corresponding equations for different physical phenomena : systems associated to the electromagnetic and gravitational fields, to hydrodynamics and to magnetohydrodynamics.

Preface
Tensor Distributions
Maxwell's equations and electromagnetic waves over a curved space-time
Einstein's equations and the Leray theorem
Gravitational and electromagnetic shock waves
Relativistic hydrodynamics
The equations of magnetohydrodynamics
Magnetohydrodynamic shock waves
Hugoniot's function and applications
Annex I - Shock waves and alfven waves
Annex II - Magnetosonic rays
Annex III - Classical approximations of the relativistic shock equations
Bibliography
Note - Approach to a quantum theory of fields for a curved space-time
I - Tensor propagators
II - Applications to quantization problems over a curved space-time
References for the Note
Table of Contents provided by Blackwell. All Rights Reserved.

ISBN: 9780792328056
ISBN-10: 0792328051
Series: Mathematical Physics Studies
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 280
Published: 30th April 1994
Publisher: Springer
Country of Publication: NL
Dimensions (cm): 23.4 x 15.6  x 1.91
Weight (kg): 1.31